From c1d6e828a35df524df2af277eedd1471d05e4f4c Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 24 Jan 2017 23:02:09 -0800 Subject: pmem: add dax_operations support Setup a dax_device to have the same lifetime as the pmem block device and add a ->direct_access() method that is equivalent to pmem_direct_access(). Once fs/dax.c has been converted to use dax_operations the old pmem_direct_access() will be removed. Signed-off-by: Dan Williams --- tools/testing/nvdimm/pmem-dax.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) (limited to 'tools/testing') diff --git a/tools/testing/nvdimm/pmem-dax.c b/tools/testing/nvdimm/pmem-dax.c index c9b8c48f85fc..b53596ad601b 100644 --- a/tools/testing/nvdimm/pmem-dax.c +++ b/tools/testing/nvdimm/pmem-dax.c @@ -15,13 +15,13 @@ #include #include -long pmem_direct_access(struct block_device *bdev, sector_t sector, - void **kaddr, pfn_t *pfn, long size) +long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff, + long nr_pages, void **kaddr, pfn_t *pfn) { - struct pmem_device *pmem = bdev->bd_queue->queuedata; - resource_size_t offset = sector * 512 + pmem->data_offset; + resource_size_t offset = PFN_PHYS(pgoff) + pmem->data_offset; - if (unlikely(is_bad_pmem(&pmem->bb, sector, size))) + if (unlikely(is_bad_pmem(&pmem->bb, PFN_PHYS(pgoff) / 512, + PFN_PHYS(nr_pages)))) return -EIO; /* @@ -34,11 +34,10 @@ long pmem_direct_access(struct block_device *bdev, sector_t sector, *kaddr = pmem->virt_addr + offset; page = vmalloc_to_page(pmem->virt_addr + offset); *pfn = page_to_pfn_t(page); - dev_dbg_ratelimited(disk_to_dev(bdev->bd_disk)->parent, - "%s: sector: %#llx pfn: %#lx\n", __func__, - (unsigned long long) sector, page_to_pfn(page)); + pr_debug_ratelimited("%s: pmem: %p pgoff: %#lx pfn: %#lx\n", + __func__, pmem, pgoff, page_to_pfn(page)); - return PAGE_SIZE; + return 1; } *kaddr = pmem->virt_addr + offset; @@ -49,6 +48,6 @@ long pmem_direct_access(struct block_device *bdev, sector_t sector, * requested range. */ if (unlikely(pmem->bb.count)) - return size; - return pmem->size - pmem->pfn_pad - offset; + return nr_pages; + return PHYS_PFN(pmem->size - pmem->pfn_pad - offset); } -- cgit v1.2.3